This is your basic drafting chair / stool by Boss.  It’s contoured back and seat are designed to help relieve back strain.  A solid 20-inch diameter chrome footring converts the chair into an excellent drafting stool.  The base is composed of 27 inches of nylon for excellent stability, the height is pneumatically adjustable, armrests can also be adjusted, and optional glides are available in place of casters.

If you’re looking for a nice ergonomic drafting chair or stool combo, the Boss drafting stool can be purchased for around $100 which isn’t all that expensive when compared to luxury ergonomic office chairs that range easily into the thousands of dollars.